For over half a century Jung has been engaged in research into and therapy of schizophrenia. This volume contains his original pioneering work, “The Psychology of Dementia Praecox”, which was published in 1907, and a series of nine other papers on this subject given to psychiatrists between 1914 and 1958.

His first investigations were into the nature of the disintegration of thought processes, using the word association test. These showed the extent to which the feeling-toned complexes disturb attention and association processes, with resultant fragmentation, thought deprivation, and inhibitions, and suggested that the findings might be applied in clinical analysis. The